Struct PoolConnection 

pub struct PoolConnection { /* private fields */ }

A connection borrowed from the pool.

Uses tokio::sync::Mutex for interior mutability because the driver’s Connection requires &mut self for queries, but the Executor trait takes &self. The mutex is uncontended in practice — a single connection is used by one task at a time, never shared between concurrent tasks. tokio::sync::Mutex is needed (over RefCell) because the future holding the guard must be Send for tokio task migration between worker threads.

Returned to the pool when dropped.

Trait Implementations

impl Debug for PoolConnection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Executor for PoolConnection

async fn query_raw( &self, sql: &str, sql_hash: u64, params: &[&(dyn Encode + Sync)], ) -> BsqlResult<OwnedResult>

Execute a query and return all rows.

async fn query_raw_readonly( &self, sql: &str, sql_hash: u64, params: &[&(dyn Encode + Sync)], ) -> BsqlResult<OwnedResult>

Execute a read-only query. May route to replicas in the future.

async fn execute_raw( &self, sql: &str, sql_hash: u64, params: &[&(dyn Encode + Sync)], ) -> BsqlResult<u64>

Execute a query and return the number of affected rows.